BT100 | 12V Battery & System Tester | TOPDON

The TOPDON BT100 delivers fast, accurate testing for 12V batteries, cranking systems, and charging systems—all in one compact, cost-effective device. Designed for both pros and DIYers, it combines dealer-level accuracy, versatile functions, and simple operation to make diagnostics easy. From routine battery health checks to troubleshooting failures and dashboard warnings, the BT100 gives users the clarity needed to solve problems quickly and confidently.

Comprehensive Testing in a Compact Tool

The TOPDON BT100 packs pro-level testing into a portable, straightforward design. With the ability to run battery, cranking, charging, and ripple tests, it delivers more versatility and insight than a basic voltage tester—allowing technicians and DIYers alike to diagnose issues with confidence.

Get the Whole Picture on Your Battery's Health

Get an inside look at your battery’s health with clear readings of State of Health (SOH), State of Charge (SOC), and Internal Resistance. Results appear instantly on the display, while three easy-to-read LED lights—GOOD, CHARGE, or BAD—give you a quick visual status at a glance. No guesswork, just clear answers so you can act with confidence.

Understand True Starting Power

The BT100’s cranking test measures starting voltage and time, providing clear data on how the battery performs under starting stress. Quickly determine if the battery is delivering reliable power or showing signs of weakness.

Pinpoint Charging System Problems

Is it the battery or the alternator? The BT100 makes it clear. Its charging test analyzes ripple, loaded, and unloaded voltage, so you can instantly verify charging system performance and find the solution faster.

One Tester for All Lead-Acid 12V Batteries

The BT100 tests all 12V lead-acid battery chemistries: regular flooded, AGM flat plate, AGM spiral, GEL, and EFB batteries. With a 100–2000A test range, it delivers accurate diagnostics across everything from compact cars to full-size trucks, making it a versatile tool for both professional shops and home garages.

Clear Results, Anytime, Anywhere

Say goodbye to guesswork. The BT100’s 2-inch backlit LCD screen delivers accurate digital results you can easily read in bright daylight, low light, or anywhere in between—so you never have to squint or second-guess again.

Technical Specs

• Working Temperature Fahrenheit: -4°F to 140°F
• Working Temperature Celsius: -20°C to 65°C
• Storage Temperature Fahrenheit: -4°F to 158°F
• Storage Temperature Celsius: -20°C to 70°C
• Product Width (inches): 16.93
• Product Length (inches): 5.37
• Product Height (inches): 0.89
• Product Weight (lbs): 0.57
• Display Resolution: 128 x 64

Packaging

• What's in the Box: BT100, User Manual
• Product Length (inches): 5.37
• Product Width (inches): 16.93
• Product Height (inches): 0.89
• Product Weight (lbs): 0.57
• Retail Package Length (inches): 11.42
• Retail Package Width (inches): 10.24
• Retail Package Height (inches): 2.36
• Retail Package Weight (lbs): 0.95
• Master Case Length (inches): 20.08
• Master Case Width (inches): 15.75
• Master Case Height (inches): 21.65
• Master Case Weight (lbs): 36.82
• Master Case Quantity: 36